BUSINESS DESCRIPTION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2022

Accounting Policies [Abstract]

Financing Receivable, Current, Allowance for Credit Loss [Table Text Block]

	Year Ended December 31
	2022		2021
Balance at beginning of year	$	80,000	$	160,000
Additions charged to costs and expenses		206,398		155,763
Accounts written off, net of recoveries		(146,398)		(235,763)
Balance at end of year	$	140,000	$	80,000

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Year Ended December 31, 2022				Year Ended December 31, 2021
	Basic		Diluted		Basic		Diluted
Net Income	$	7,196,702	$	7,196,702	$	12,251,921	$	12,251,921
Weighted-average common shares outstanding		5,090,407		5,115,801		5,207,759		5,217,722
Net income per share	$	1.41	$	1.41	$	2.35	$	2.35

Schedule of Weighted Average Number of Shares [Table Text Block]

	Year Ended December 31, 2022				Year Ended December 31, 2021
	Basic		Diluted		Basic		Diluted
Weighted-average common shares outstanding		5,090,407		5,090,407		5,207,759		5,207,759
Dilutive RSU's/Options		-		25,394		-		9,963
Weighted-average common shares outstanding		5,090,407		5,115,801		5,207,759		5,217,722